Megadeth's fourth album, Rust In Peace, considered by many THE diffinitive thrash metal album. The crowning acheivment of Megadeth it includes such classics as Tornado of Souls, Hanger 18, and Holy Wars...The Punishment Due. With amazing riffs from Dave Mustain and vicious solos from Marty Freidman R.I.P. is one of the most technically complex and perfect metal albums. ever